I have a HKS Super power flow pod filter, The induction noise sounds great, you can really hear the turbo spool. You can hear the bov too. Its the oiled type but iv never had any problems with the airflow meter. car revs better at low rpm since changing from the oem air box. I wouldnt say the car is noticably faster though, revs just pick up better from idle.

you can get the filter sponges in funky colours too if your a boy racer like me.

ignore the arrow that was for another post.